public class Test {
    public static void main(String[] args) {
        LinkList linkList = new LinkList();
        LinkList.MySingleList mySingleList = linkList.getMySingleList();
        mySingleList.createList();
        mySingleList.display();//12 23 34 45 56
        mySingleList.addFirst(67);
        System.out.println("");
        mySingleList.display();
        mySingleList.addLast(67);
        System.out.println("");
        mySingleList.display();
        System.out.println();
mySingleList.removeAllKey(67);
mySingleList.display();
    }
}
